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US 12,661,166 B2Granted
Method of manufacturing a core and shell coupling of a composite material bone implant and composite material bone implant produced thereby
AssigneeCarboFix Spine Inc.
InventorsMordechay Beyar, Oren Globerman
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Abstract
A method of manufacturing fiber-reinforced polymer matrix composite material bone screws having threads surfaced with a metallic outer layer is described. In some embodiments, the method includes preparing a metallic outer layer by 3-D printing, inserting a composite material into the metallic outer layer, and attaching the metallic outer layer onto the composite material.
Claims26
A method of manufacturing a screw comprising:
- preparing a metallic outer layer of the screw by 3-D printing, said metallic outer layer being hollow and including screw threads and formed by the 3-D printing with an inner roughness;
- inserting a composite material into the metallic outer layer, wherein the inner roughness is configured for gripping the composite material;
- and
- attaching the metallic layer onto the composite material.
1 more element
A bone screw having screw threads for rotating insertion to a bone, the bone screw comprising:
- a body formed from a composite material;
- and
- a metallic layer surfacing the body, said metallic layer formed by 3-D printing, wherein said metallic layer is formed by the 3-D printing with an inner roughness for gripping said composite material;
- wherein said metallic layer resists a shearing force applied to the metallic layer when the screw is rotated within the bone.
1 more element
Dependencies are inferred from the claim text.